Bookshelves, bricks & boards, milkcrates piled to pretend they are bookshelves... and then I ask my father-in-law (who makes wooden toys) to make me something "custom", that never quite fits either the space or the items I want to put on... Until the Great Kitchen Disaster of '01, I used a glass shelving unit. Looked very cool and stylish. Way slicker than the milk crates, but functionally the same... well... not quite functionally the same. Milk crates don't smash nearly as well when a bottom side of the shelf gets bumped too hard. My kitchen still smells of Almond extract.